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Cheap flights from Seattle to Denver from £98

SEA — DEN
23 Sep — 30 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Denver

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Denver

Mon 5/1016:27 -
Nonstop2h 54m
Mon 12/1013:07 -
Nonstop3h 05m
Deal found 21/8£151
Thu 24/919:32 -
Nonstop2h 47m
Sun 27/908:08 -
1 stop5h 42m
Deal found 19/8£185
Sat 26/907:21 -
Nonstop2h 57m
Sat 26/915:04 -
Nonstop2h 56m
Deal found 23/8£192
Sat 10/1010:13 -
Nonstop2h 55m
Tue 13/1018:59 -
1 stop24h 03m
Deal found 23/8£194
Tue 10/1110:06 -
Nonstop2h 52m
Sat 14/1118:37 -
Nonstop3h 04m
Deal found 23/8£196
Sat 26/912:30 -
1 stop5h 02m
Wed 30/906:20 -
1 stop7h 19m
Deal found 23/8£202
Wed 16/919:32 -
Nonstop2h 47m
Sat 26/908:08 -
1 stop4h 50m
Deal found 21/8£203
Tue 29/1220:40 -
Nonstop2h 35m
Tue 5/112:35 -
2 stops7h 05m
Deal found 21/8£204

Find flight deals from Seattle to Denver

Round-trip from

£151

One-way from

£98

Popular in

June

Cheapest in

January

Average price

£194
Frontier
  • Frontier
  • 5/10-12/10
  • Nonstop
  • 5h 59m total
  • Seattle to Denver
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Southwest
  • Southwest
  • 15/9
  • Nonstop
  • 2h 50m total
  • Seattle to Denver
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£36 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Sat 23/1

15:16-18:56

Nonstop2h 40m

Denver Intl

Wed 27/1

13:45-18:56

1 stop6h 11m

£209

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Tue 24/11

19:59-23:47

Nonstop2h 48m

Denver Intl

Sat 28/11

06:00-08:12

Nonstop3h 12m

£210

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Tue 15/9

05:55-14:10

2 stops7h 15m

Denver Intl

Wed 16/9

15:30-21:00

1 stop6h 30m

£214

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Thu 21/1

06:55-10:25

Nonstop2h 30m

Denver Intl

Tue 26/1

15:10-21:30

2 stops7h 20m

£218

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Mon 14/9

23:05-08:10

1 stop8h 05m

Denver Intl

Wed 16/9

14:40-21:15

2 stops7h 35m

£225

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Mon 16/11

10:35-17:10

1 stop5h 35m

Denver Intl

Sat 21/11

18:25-01:30

2 stops8h 05m

£225

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Tue 15/9

05:55-14:10

2 stops7h 15m

Denver Intl

Mon 21/9

15:00-21:50

1 stop7h 50m

£225

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Tue 22/9

11:40-18:45

1 stop6h 05m

Denver Intl

Thu 1/10

13:45-21:00

2 stops8h 15m

£225
Fastest return journey

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Thu 17/9

13:39-17:33

Nonstop2h 54m

Denver Intl

Sun 20/9

06:00-07:59

Nonstop2h 59m

£226

SeattleDenver

SEA Seattle/Tacoma Intl - DEN Denver Intl

SEADEN

Seattle/Tacoma Intl

Tue 1/12

09:25-13:00

Nonstop2h 35m

Denver Intl

Sun 6/12

13:55-21:10

2 stops8h 15m

£226

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Seattle with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Seattle to Denver

How far ahead should I book a flight from Seattle to Denver?

The price you pay for your flight from Seattle to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 32 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Denver?

Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £118). Flying from Seattle to Denver in June is currently the most expensive (average of £247). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to DEN?

One of the essential ways to save on airfare from Seattle to Denver is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 63% on airfare.

How much does it cost for a return flight from Seattle to Denver?

Airfare is typical for this route at the moment.

Seattle to Denver flights typically cost between £125 and £251 in October.
The cheapest return price found within the last 5 days was £151 on Frontier (5 Oct–12 Oct).

Related info for your journey

  • How popular is this Seattle to Denver flight route?

    Flights from Seattle/Tacoma Intl to Denver Intl have been viewed 3 times in the past calendar month.

  • How long is the flight from Seattle to Denver?

    Departing from Seattle to Denver will take you 2h 48m. The distance between Seattle and Denver is about 1022 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from Seattle to Denver?

    No one likes to see their flight delayed. When booking a flight from Seattle to Denver consider choosing Copa Airlines (83%), Qatar Airways (79%) or United Airlines (76%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from Seattle to Denver that include hotel bookings?

    Yes. In addition to deals on Seattle to Denver flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Denver.

  • Can I find deals for business class flights from Seattle to Denver?

    Yes. Cheapflights offers flight deals from Seattle to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Denver?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Denver (average of £118). Flying from Seattle to Denver in June is currently the most expensive (average of £247). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Why should you use Cheapflights to find cheap flight tickets from Seattle to Denver?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Denver from Seattle.

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Denver flexibly with Cheapflights today.

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